Improvement in anvils for cartridge-primers



J. H. GILL. Anvil for Cart'idge-Prim'ers.; NO. 220,472.

Patented Oct. 14,71879,

Fg?. l Igny Minewes: Q @www a thick solid disk of` 'a., formed across one face from side to sde JABEZ H. GILL, 0F PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN ANvlLs Fon CARTRIDGE-emmene.

Specification forming pai-t ,of Letters Patent N0. 220,472,

amd october 14, 187e; application inea July 29, 1879.

To all whom it may concern Be it know that I, JABEZ H. GILL, of Philadelphia, in thecounty of Philadelphia and .State of Pennsylvania, have invented certain lmprovementsin Anvils for Cartridge-Primers,

0f which the following is a specification My invention has reference .to that class of anvls which are used in cup-shaped primers or caps. It relates to an improved anvil, consisting of a V solid metal disk having a groove formed transversely across one face and through the two edges.

Figure 1 is a view illustrating the form of tbe strip or blank, the manner in which the anvils are punched therefrom, andthe form of the anvil; Fig. 2, a perspective view of the anvil 5 Fig. 3, au edge view of thesame; Fig. 4, a central cross-section of the same on the line a: n n,- Fig. 5, a sectional vie'w, showing the anvil in place in a primer; Fig. 6, asectional view of a cartridge-shell with the primer and anvil in place therein. Figs. 7 and S are, respectively, an edge view and a sectional view, illustrating the anvil in a slightly-modified form. y

A represents the anvil, consisting merely of metal having a groove,

and through or across 4the two edges to the back. It is designed to fit closely within a cap or primer lof ordinary form, and in lpractice is inserted therein in the manner shown, with its groovedface outward, so that when inserted into a cartridge-shell the groove will alord a'free passage for the tia-me to the vent or opening in the base of the shell.

When the primer is in place the anvil receives a solid support from the shell, and, by reason of its stiffness and peculiar form, it offers a so1idsurt`ace,npon which the fulminate may be exploded with ease and certainty.

The anvil may be made in a fiat form, as represented in Figs. 3, 4, and 5, or it may be slightly dished, and thereby made convex on the back, as shownvin Figs. 7 and 8.4

The anvils may or by any suitable mechanism; but it is preferred to produce them by first rolling or draw ing a long strip of metal, D, with a groove in its center, and thenpunehing the anvils there from, as represented in Fig. l, apunch being used which will at the same time that it cuts ont the body of the anvil form the extensions ot the groove through the edges.

I am aware that anvils have been made in a great variety of forms, and that many of them were of such form that when in place passages existed in the cartridge for the trans mission of the llame to the powder; but I am not aware that any one has hitherto produced a circulardisk primerwith a groove carried directly across its front face and backward through the edges. v

My primer is advantageous in that it is exceedingly cheap, that it a'ords a solidsupport for the fulminate, that it is applicable to all externally-recessed shells, and that it permits the llame to'pass in a short and direct course to the powder.

Having described my invention, what I claim is- The herein-described' anvil, consisting of a circular disk of metal provided with a groove extending directly across its face and backward through the edges, as shown.

JABEZ H. GILL.

Witnesses:

HENRY WERNLE, l, MATTHEW MoBRIDE.

be made in any suitable way 

